Auxiliary structure for locking angle of endoscope lens

Abstract

The utility model relates to an auxiliary structure for locking the angle of an endoscope lens, which comprises an arc-shaped locking plate, the locking plate is arranged below a rotating wheel, a friction pad is arranged on one surface, close to the rotating wheel, of the locking plate, and the locking plate is tightly attached to the peripheral wall of the rotating wheel through the friction pad; one end of the locking plate is connected with the endoscope shell, the other end of the locking plate is connected with a pull rod, the end, away from the locking plate, of the pull rod is rotationally connected with an operation plate, an operation opening allowing the operation plate to swing is formed in the endoscope shell, the operation plate is rotationally connected with the inner wall of the operation opening through a pin shaft, and a locking piece used for fixing the operation plate is arranged at the operation opening. When the end, away from the pull rod, of the operation plate rotates towards the rotating wheel, the end, connected with the operation plate, of the pull rod moves upwards, and the end, connected with the pull rod, of the locking plate rotates towards the rotating wheel till the friction pad abuts against the peripheral wall of the rotating wheel. The lens can be locked after the observation angle is adjusted, the stability of the endoscope lens is guaranteed, and the operation effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of endoscopes, in particular to an auxiliary structure for locking the angle of an endoscope lens. Background Art

[0002] An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, and software. An endoscope has an image sensor, an optical lens, a light source, a mechanical device, etc. It can enter the stomach through the mouth or other natural orifices into the body. An endoscope is a tube equipped with a light, which can enter the stomach through the mouth or other natural orifices into the body. An endoscope can be used to see lesions that cannot be shown by X-rays, so it is very useful for doctors.

[0003] When an endoscope is used clinically, it is often necessary to adjust the angle of the lens. The lens is set at the front end of the endoscope, and a rotating wheel is set at the rear end of the endoscope. The rotating wheel is usually connected to the lens through a steel wire and drives the lens to swing. The two ends of the steel wire pass through the radial sides of the rotating wheel respectively. A first connection point and a second connection point are set on the lens. The ends of the steel wire away from the rotating wheel are connected to the first connection point and the second connection point respectively, and the first connection point is located on the right side of the second connection point. The rotating wheel is set in the shell of the endoscope, and a crank is set outside the shell. The crank is coaxially connected to the rotating wheel through a driving rod. The driving rod penetrates into the shell and connects to the rotating wheel and drives the rotating wheel to rotate.

[0004] When the rotating wheel rotates clockwise, the end of the steel wire connected to the second connection point rises and the end of the steel wire connected to the first connection point falls, thereby causing the lens to swing clockwise; when the rotating wheel rotates counterclockwise, the end of the steel wire connected to the first connection point rises and the end of the steel wire connected to the second connection point falls, thereby causing the lens to swing counterclockwise.

[0005] When using an endoscope for observation, the observation angle needs to be adjusted first. The doctor drives the wheel to rotate by turning the handle, so that the wheel drives the lens to swing. Then the lens needs to be kept in the appropriate direction for observation. At this time, the doctor needs to keep the handle moving. If the doctor's fingers shake or tremble, it will affect the stability of the endoscope lens and affect the surgical effect. Utility Model Content

[0006] In order to solve the above technical problems, the present application provides an auxiliary structure for locking the angle of an endoscope lens.

[0007] The auxiliary structure for locking the angle of an endoscope lens provided in the present application adopts the following technical solution:

[0008] An auxiliary structure for locking the angle of an endoscope lens comprises an arc-shaped locking plate, the locking plate is arranged below a rotating wheel, a friction pad is arranged on a surface of the locking plate close to the rotating wheel, the locking plate is in close contact with the outer peripheral wall of the rotating wheel through the friction pad and limits the rotation of the rotating wheel;

[0009] One end of the locking plate is fixedly connected to the endoscope housing, the other end of the locking plate is rotatably connected to a pull rod, one end of the pull rod away from the locking plate is rotatably connected to an operating panel, and the connection point between the pull rod and the locking plate is close to the top of the operating panel, an operating port for the operating panel to swing is provided on the endoscope housing, the operating panel is rotatably connected to the inner wall of the operating port through a pin shaft, and a locking piece for fixing the operating panel is provided at the operating port;

[0010] The pin shaft is located below the connection between the pull rod and the operating plate. When the operating plate rotates at one end away from the pull rod toward the direction close to the rotating wheel, the end of the pull rod connected to the operating plate moves upward, causing the end of the locking plate connected to the pull rod to rotate toward the direction close to the rotating wheel until the friction pad is tightly pressed against the outer peripheral wall of the rotating wheel.

[0011] Preferably, a locking hole for the locking member to pass through is formed on the operating plate, and the locking member comprises an integrally formed cylindrical portion and a spherical portion, the diameter of the cylindrical portion is smaller than the width of the locking hole, the diameter of the spherical portion is larger than the width of the locking hole, and the spherical portion is interference fit with the inner wall of the locking hole when passing through the locking hole;

[0012] An auxiliary plate is fixedly connected to the inner wall of the operation port, and the cylindrical portion is fixedly connected to the auxiliary plate.

[0013] Preferably, the locking hole is a waist-shaped hole, and the length direction of the locking hole is consistent with the length direction of the operating plate.

[0014] Preferably, a mating annular groove is provided on a surface of the operating plate away from the locking plate, the mating annular groove is located at the periphery of the locking hole and is connected to the locking hole, and the mating annular groove is arranged to expand outwardly in a direction from close to the pull rod to away from the pull rod.

[0015] Preferably, the friction pad is connected to the locking plate via a connecting piece, and a connecting hole is provided on the friction pad for the connecting piece to pass through; the connecting piece includes a connecting portion and a limiting portion, the connecting portion is connected to the friction pad, the diameter of the connecting portion is consistent with the diameter of the connecting hole, the diameter of the limiting portion is larger than the diameter of the connecting hole, and the limiting portion is interference fit with the connecting hole.

[0016] Preferably, the outer periphery of one end of the limiting portion away from the connecting portion is arranged in an arc shape.

[0017] Preferably, a plurality of the connecting members are arranged at intervals along the length direction of the friction pad.

[0018] Preferably, the friction pad extends from the middle of the locking plate in the length direction to one end where the locking plate is connected to the pull rod.

[0019] Preferably, one end of the operating plate away from the pull rod is bent in a direction away from the locking plate.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] When the rotating wheel needs to be locked, the end of the operating plate away from the pull rod is rotated toward the direction close to the rotating wheel. At this time, the locking piece passes through the locking hole, and the spherical part of the locking piece locks the operating plate. The end of the pull rod connected to the operating plate moves upward, driving the end of the locking plate connected to the pull rod to rotate toward the direction close to the rotating wheel until the friction pad is tightly pressed against the outer peripheral wall of the rotating wheel, and the friction pad and the rotating wheel form an interference fit, so that the rotating wheel is locked, and the direction of the lens is also locked. The doctor does not need to keep the action of the crank handle, which ensures the stability of the endoscope lens and the surgical effect.

[0022] When the rotating wheel needs to be unlocked, the end of the operating plate away from the pull rod is rotated in the direction away from the rotating wheel. At this time, the spherical part of the locking piece disengages from the locking hole, the operating plate is unlocked, and the end of the pull rod connected to the operating plate moves downward, driving the end of the locking plate connected to the pull rod to rotate in the direction away from the rotating wheel until the friction pad disengages from the outer peripheral wall of the rotating wheel, so that the rotating wheel can rotate freely and the lens direction can also rotate freely. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the auxiliary structure for locking the angle of the endoscope lens when the rotating wheel is in a locked state in an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the overall structure of the auxiliary structure for locking the angle of the endoscope lens when the rotating wheel is in a locked state in an embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure used to display the connecting piece in the embodiment of the present application.

[0026] Explanation of the reference numerals: 1. endoscope housing; 11. operating port; 12. auxiliary plate; 2. rotating wheel; 3. locking plate; 31. connecting hole; 4. friction pad; 5. pull rod; 6. operating plate; 61. locking hole; 62. matching ring groove; 7. locking piece; 71. cylindrical portion; 72. spherical portion; 8. connecting piece; 81. connecting portion; 82. limiting portion. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] The embodiment of the present application discloses an auxiliary structure for locking the angle of an endoscope lens.

[0029] Reference Figure 1-3 The auxiliary structure for locking the angle of the endoscope lens includes an arc-shaped locking plate 3, which is arranged below the rotating wheel 2. The curvature of the inner circumference of the locking plate 3 matches the curvature of the outer circumference of the rotating wheel 2. A friction pad 4 is arranged on the side of the locking plate 3 close to the rotating wheel 2. The locking plate 3 is tightly attached to the outer circumferential wall of the rotating wheel 2 through the friction pad 4 and limits the rotation of the rotating wheel 2.

[0030] One end of the locking plate 3 is fixedly connected to the endoscope housing 1, and the other end of the locking plate 3 is rotatably connected to a pull rod 5, and one end of the pull rod 5 away from the locking plate 3 is rotatably connected to an operating plate 6, and the connection point between the pull rod 5 and the locking plate 3 is close to the top of the operating plate 6. Both ends of the pull rod 5 are bent, and the bent sections at both ends of the pull rod 5 penetrate the locking plate 3 and the operating plate 6 respectively and are rotatably connected to the corresponding locking plate 3 and the operating plate 6.

[0031] The endoscope housing 1 is provided with an operation opening 11 for the operation panel 6 to swing, and the operation panel 6 is rotatably connected to the inner wall of the operation opening 11 through a pin shaft, and the pin shaft is located below the connection between the pull rod 5 and the operation panel 6, and a locking member 7 for fixing the operation panel 6 is provided at the operation opening 11. The friction pad 4 extends from the middle of the length direction of the locking plate 3 to one end where the locking plate 3 and the pull rod 5 are connected.

[0032] When the end of the operating plate 6 away from the pull rod 5 rotates toward the direction close to the rotating wheel 2, the end of the pull rod 5 connected to the operating plate 6 moves upward, causing the end of the locking plate 3 connected to the pull rod 5 to rotate toward the direction close to the rotating wheel 2 until the friction pad 4 is tightly pressed against the outer peripheral wall of the rotating wheel 2.

[0033] The operating plate 6 is provided with a locking hole 61 for the locking member 7 to pass through. The locking hole 61 is a waist-shaped hole. The length direction of the locking hole 61 is consistent with the length direction of the operating plate 6 , so that the locking member 7 can move in the locking hole 61 .

[0034] The locking member 7 includes an integrally formed cylindrical portion 71 and a spherical portion 72. The diameter of the cylindrical portion 71 is smaller than the width of the locking hole 61, and the diameter of the spherical portion 72 is larger than the width of the locking hole 61. When the spherical portion 72 passes through the locking hole 61, it has an interference fit with the inner wall of the locking hole 61. An auxiliary plate 12 is fixedly connected to the inner wall of the operation port 11, and the cylindrical portion 71 is fixedly connected to the auxiliary plate 12.

[0035] A mating annular groove 62 is provided on the side of the operating plate 6 away from the locking plate 3. The mating annular groove 62 is located on the periphery of the locking hole 61 and is connected to the locking hole 61. The mating annular groove 62 is arranged to expand outward from the direction close to the pull rod 5 to the direction away from the pull rod 5. When the end of the operating plate 6 away from the pull rod 5 is rotated toward the direction away from the rotating wheel 2, the spherical part 72 of the locking piece 7 is convenient to disengage from the locking hole 61.

[0036] The friction pad 4 is connected to the locking plate 3 through a connecting piece 8, and a connecting hole 31 is provided on the friction pad 4 for the connecting piece 8 to pass through. The connecting piece 8 includes a connecting portion 81 and a limiting portion 82, the connecting portion 81 is connected to the friction pad 4, the diameter of the connecting portion 81 is consistent with the diameter of the connecting hole 31, the diameter of the limiting portion 82 is larger than the diameter of the connecting hole 31, and the limiting portion 82 is interference fit with the connecting hole 31.

[0037] The friction pad 4 is connected to the locking plate 3 via a connector 8, which facilitates replacement of the friction pad 4 and avoids reduction of the friction force of the friction pad 4 due to long-term use, thereby ensuring the interference fit between the friction pad 4 and the outer peripheral wall of the runner 2.

[0038] The outer periphery of one end of the limiting portion 82 away from the connecting portion 81 is arranged in an arc shape, so as to facilitate the connecting member 8 to pass into the connecting hole 31 .

[0039] A plurality of connecting members 8 are arranged at intervals along the length direction of the friction pad 4 , so that the friction pad 4 and the locking plate 3 are stably connected.

[0040] One end of the operating plate 6 away from the pull rod 5 is bent in a direction away from the locking plate 3 , so that the operator can easily rotate the operating plate 6 .

[0041] The implementation principle of an auxiliary structure for locking the angle of an endoscope lens in an embodiment of the present application is as follows:

[0042] When it is necessary to lock the rotating wheel 2, the end of the operating plate 6 away from the pull rod 5 is rotated toward the direction close to the rotating wheel 2. At this time, the locking piece 7 passes through the locking hole 61, and the spherical part 72 of the locking piece 7 locks the operating plate 6. The end of the pull rod 5 connected to the operating plate 6 moves upward, driving the end of the locking plate 3 connected to the pull rod 5 to rotate toward the direction close to the rotating wheel 2 until the friction pad 4 is tightly pressed against the outer peripheral wall of the rotating wheel 2, and the friction pad 4 and the rotating wheel 2 form an interference fit, so that the rotating wheel 2 is locked, and the direction of the lens is also locked, and the doctor does not need to keep the action of the crank handle, thereby ensuring the stability of the endoscope lens and the surgical effect;

[0043] When it is necessary to unlock the rotating wheel 2, the end of the operating plate 6 away from the pull rod 5 is rotated in the direction away from the rotating wheel 2. At this time, the spherical portion 72 of the locking piece 7 disengages from the locking hole 61, the operating plate 6 is unlocked, and the end of the pull rod 5 connected to the operating plate 6 moves downward, driving the end of the locking plate 3 connected to the pull rod 5 to rotate in the direction away from the rotating wheel 2 until the friction pad 4 disengages from the outer peripheral wall of the rotating wheel 2, so that the rotating wheel 2 can rotate freely and the lens direction can also rotate freely.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An auxiliary structure for locking the angle of an endoscope lens, characterized in that: The invention comprises an arc-shaped locking plate (3), wherein the locking plate (3) is arranged below the rotating wheel (2), and a friction pad (4) is arranged on a surface of the locking plate (3) close to the rotating wheel (2), and the locking plate (3) is in close contact with the outer peripheral wall of the rotating wheel (2) through the friction pad (4) to limit the rotation of the rotating wheel (2); One end of the locking plate (3) is fixedly connected to the endoscope housing (1), and the other end of the locking plate (3) is rotatably connected to a pull rod (5); the end of the pull rod (5) away from the locking plate (3) is rotatably connected to an operating plate (6), and the connection point between the pull rod (5) and the locking plate (3) is close to the top of the operating plate (6); an operating opening (11) for swinging the operating plate (6) is provided on the endoscope housing (1); the operating plate (6) is rotatably connected to the inner wall of the operating opening (11) via a pin shaft; and a locking member (7) for fixing the operating plate (6) is provided at the operating opening (11); The pin shaft is located below the connection between the pull rod (5) and the operating plate (6). When the end of the operating plate (6) away from the pull rod (5) rotates in the direction close to the rotating wheel (2), the end of the pull rod (5) connected to the operating plate (6) moves upward, so that the end of the locking plate (3) connected to the pull rod (5) rotates in the direction close to the rotating wheel (2) until the friction pad (4) is tightly pressed against the outer peripheral wall of the rotating wheel (2).

2. The auxiliary structure for locking the angle of an endoscope lens according to claim 1, characterized in that: The operating plate (6) is provided with a locking hole (61) for the locking member (7) to pass through, the locking member (7) comprising an integrally formed cylindrical portion (71) and a spherical portion (72), the diameter of the cylindrical portion (71) being smaller than the width of the locking hole (61), the diameter of the spherical portion (72) being larger than the width of the locking hole (61), and the spherical portion (72) being interference-fitted with the inner wall of the locking hole (61) when passing through the locking hole (61); An auxiliary plate (12) is fixedly connected to the inner wall of the operation port (11), and the cylindrical portion (71) is fixedly connected to the auxiliary plate (12).

3. The auxiliary structure for locking the angle of an endoscope lens according to claim 2, characterized in that: The locking hole (61) is a waist-shaped hole, and the length direction of the locking hole (61) is consistent with the length direction of the operating plate (6).

4. The auxiliary structure for locking the angle of an endoscope lens according to claim 2, characterized in that: A matching annular groove (62) is provided on the side of the operating plate (6) away from the locking plate (3); the matching annular groove (62) is located outside the locking hole (61) and is connected to the locking hole (61); the matching annular groove (62) is arranged to expand outwardly in a direction from close to the pull rod (5) to away from the pull rod (5).

5. The auxiliary structure for locking the angle of an endoscope lens according to claim 1, characterized in that: The friction pad (4) is connected to the locking plate (3) via a connecting piece (8); a connecting hole (31) is provided on the friction pad (4) for the connecting piece (8) to pass through; the connecting piece (8) comprises a connecting portion (81) and a limiting portion (82); the connecting portion (81) is connected to the friction pad (4); the diameter of the connecting portion (81) is consistent with the diameter of the connecting hole (31); the diameter of the limiting portion (82) is larger than the diameter of the connecting hole (31); and the limiting portion (82) is interference fit with the connecting hole (31).

6. The auxiliary structure for locking the angle of an endoscope lens according to claim 5, characterized in that: The outer periphery of the limiting portion (82) at one end away from the connecting portion (81) is arranged in an arc shape.

7. The auxiliary structure for locking the angle of an endoscope lens according to claim 5, characterized in that: A plurality of connecting members (8) are arranged at intervals along the length direction of the friction pad (4).

8. The auxiliary structure for locking the angle of an endoscope lens according to claim 1, characterized in that: The friction pad (4) extends from the middle of the locking plate (3) in the length direction to one end where the locking plate (3) is connected to the pull rod (5).

9. The auxiliary structure for locking the angle of an endoscope lens according to claim 1, characterized in that: One end of the operating plate (6) away from the pull rod (5) is bent in a direction away from the locking plate (3).

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